Diagnostic instrument



FIG. 1 is a perspective view of the diagnostic instrument;

FIG. 2 is an exploded view of the diagnostic instrument;

FIG. 3 is a top view of the diagnostic instrument;

FIG. 4 is a bottom view of the diagnostic instrument;

FIG. 5 is a first side view of the diagnostic instrument;

FIG. 6 is a second side view of the diagnostic instrument;

FIG. 7 is a first end view of the diagnostic instrument;

FIG. 8 is a second end view of the diagnostic instrument;

FIG. 9 is a perspective view of the second embodiment of the diagnostic instrument;

FIG. 10 is an exploded view of the second embodiment of the diagnostic instrument;

FIG. 11 is a top view of the second embodiment of the diagnostic instrument;

FIG. 12 is a bottom view of the second embodiment of the diagnostic instrument;

FIG. 13 is a first side view of the second embodiment of the diagnostic instrument;

FIG. 14 is a second side view of the second embodiment of the diagnostic instrument;

FIG. 15 is a first end view of the second embodiment of the diagnostic instrument; and,

FIG. 16 is a second end view of the second embodiment of the diagnostic instrument.

The broken lines connecting the corners of the separated diagnostic instrument components shown on the left and right sides of FIGS. 2 and 10 are included to show the order of assembly. All other broken lines in the drawing views are included for the purpose of illustrating portions of the diagnostic instrument that form no part of the claimed design. 

The ornamental design for a diagnostic instrument, as shown and described. 